■Specialties

■Research Keywords

■Research Interests

Construction of the auditory filterbankThe aim of this work is to construct the auditory filterbank that can account psycho-acoustical data and physiological data for frequency selectivity of the auditory system.Computational Auditory Scene AnalysisThe study of computational theory of the auditory system tries to answer the following questions:Extraction of the fundamental frequency of speech in real environmentsExtraction of the fundamental frequency (F0) of target speech is an important problem not only in speech analysis/synthesis but also in various speech signal processings such as speech segregation. Various F0 estimation methods have been proposed, but the most of these methods have the drawbacks for estimating accurate F0s of target speech in real environments. My approach is to construct an estimation model based on computational auditory scene analysis (CASA).A study on the speech dereverberation methodTo dereverberate the original signal from a reverberant signal is an important issue concerning speech signal processing such as preprocessing for speech recognition systems. Most of the inverse filtering methods have to measure the impulse response of the room acoustics to determine its inverse filter before the dereverberation. Moreover, the impulse response temporally varies with various environmental factors (temperature etc.), so the room acoustics have to be measured each time these methods are used. In this work, it has been trying to model a speech dereverberation based on the Modulation Transfer Function, without measuring the impulse response of room acoustics.

Improvements to Creativity in Singing Abilities Based on Perspective of Studies on Interaction between Speech Production and Auditory Perception，Masashi Unoki and Kazushi Nishimoto，Proc. KICSS 2012, CD-ROM, IEEE, 2012

Improvements to Creativity in Singing Abilities Based on Perspective of Studies on Interaction between Speech Production and Auditory Perception，Masashi Unoki and Kazushi Nishimoto，KICSS 2012，Melbourne, Australia，2012/11/